Definitions

1. noun

A word or phrase without any repeating letters, such as ‘subdermatoglyphic’.

“The word ‘subdermatoglyphic’ is an isogram because it doesn’t contain any repeating letters.”

2. noun

A sequence of characters that contains no repeating characters, such as a sequence of letters or numbers.

“The combination ‘8423916573’ is an isogram because it doesn’t contain any repeating digits.”